Added position class
Updated chunk format and chunk loading

New format supports z-dimension.
Changed the separators
Fixed a bug regarding chunk loading
Finally rendering correctly!
vertical rendering
Merge branch 'master' of https://github.com/igwb/Excavor

Conflicts:
	src/me/igwb/Excavor/Environment/Chunk.java
	src/me/igwb/Excavor/Game/Core.java